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Anisotropic thermoelectric power in single crystalline Mg1-xAlxB2 compounds

Year: 2024

Type: article

Abstract: The thermoelectric power of single crystalline Mg1-xAlxB2 compounds is measured and analyzed along the main crystallographic directions (ab-plane and c-axis direction). It is shown that the classical model of thermoelectric power with phonon drag and diffusion terms provides satisfactory explanation of the temperature dependence of the Seebeck parameter S(T). Agreement of S(T) with the study of resistivity is achieved with some variation of the Debye temperature being a model-sensitive parameter. Presence of positive and negative charge carriers is observed and competing contributions of the pi and sigma bands are discussed.

Source: Repository for Publications and Research Data (ETH Zurich)

DOI: 10.3929/ethz-b-000692661

Authors: Toliński, Tomasz, Oganisian, Karen, Karpiński, Janusz, Rogacki, Krzysztof

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W6947548336

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